Non-feedback protocol based on fountain codes and parallel paths for deep space communications
一种基于喷泉码和并行路径的深空通信无反馈协议

To adapt to the characteristic of large delay in deep space communications, a non-feedback data transmission protocol based on fountain codes and parallel paths is presented. This protocol can avoid the repeated process of handshake between the sender and the recipient, thus shorten the data transmission time. Moreover, through the deployment of multiple relays between the sender and recipient, parallel paths can be established for the sake of continuous data transmission. Parallel paths can overcome the shortcoming of single path which is vulnerable to link outage and take full advantage of link resources. The simulation results demonstrate: if the coding overhead is slightly larger than the packet loss rate, the original data can be accurately recovered with high probability at the recipient. Increasing number of parallel paths can improve transmission capacity and decrease transmission delay.